Prachin Bharater Itihas (Pragaitihasik-600 Saal): A textbook of History for three year degree course (Semester System Prepared as per the new C.B.C.S. system) of all the Universities of West Bengal & Tripura, written by Sukumar Mandal (M.A.) Assistant Professor, Department of History, Hiralal Bhakat College, Nalhati, Birbhum. About Author : Sukumar Mandal (M.A.) Assistant Professor, Department of History, Hiralal Bhakat College, Nalhati, Birbhum.